The cup holder that finally fits a real water bottle in the car seat

Car seat cup holders have one job, and most of them are bad at it. They're sized for a juice box or a sippy cup, and the second you try to fit an actual water bottle in there, it either doesn't fit or falls out every time you hit a bump.

The fix is an adjustable cup holder expander that installs into the existing holder in a few seconds. Adjust it open, and it grips bottles of any size, which covers most Yeti, Hydro Flask, and Nalgene-style bottles, not just the tiny kid cups.

It's a small, unglamorous fix, but it's the kind of thing that solves a daily annoyance for about $16 and three minutes of installation.